@iteafreely When I make a configuration change, this change is not gone thru after a restart. I have to power off/on the RPi to activate the configuration change.
So, you think this is also because of this configuration error

On the latest HASSIO release now and still not solved Can someone help with this problem?

core-ssh:~# hassio ha check
ERROR
starting version 3.2.4
Testing configuration at /config
Failed config
  mysensors:
    - Invalid config for [mysensors]: /config directory does not exist or is not writeable        
for dictionary value @ data
['mysensors']
['gateways'][0]
['persistence_file']. Got '/config/mysensors.json'not a valid value for dictionary value @ data
['mysensors']
['gateways']
[0]
['device']. Got '/dev/ttyUSB0'. 
(See /config/configuration.yaml, line 85). 
Please check the docs at https://home-assistant.io/components/mysensors/

The mysensors.json and configuration.yaml are in the same config directory.
Despite the above problem the system seems to work fine.

Is this a fake error?

How can I prevent all the "state_changed" events being written in the hassio database.
It is taken up a lot of dataspace and has no historic meaning.
The Recorder component does not seem to support excluding "events" . The recorder component seems to support only the exclusion of "entities" and "domains".
Any suggestions welcome.

How can I implement the new 2.2.0 function

#define MY_SIGNAL_REPORT_ENABLED

Should it be defined in the node and/or the gateway?
Can it be used with NRF24?
How is the RSSI value reported?
Could not find a writeup on this new function.

@qqlapraline Just use a 5V pro mini and get rid of level converter and mosfet!
Power the 5V HC-SR04 sonar with a pro mini digital pin.
Switch on the sonar for doing a measurement and then switch off again and put the promini to sleep till the next measurement.

@mfalkvidd Thanks for confirming about the BC message being normal protocol.
I have used the log parser (great!) and the trouble shooting flowchart (great!).
I am currently powering thru USB but as the comms problem is intermittend I need some further investigation.

I have a serial gateway with one nodeid=20 running for some time with no problems.
Getting comms problems with a second nodeid=22 when added to the same gateway.

Below is the debug log from nodeid=22 with the communication problems.
On the 4th line is a READ from nodeid=20. I don't have REPEATER MODE defined!
There is also a broadcast message MSG:BC

What could be wrong here?

124187 !TSF:SND:TNR
124194 MCO:SLP:MS=6000,SMS=0,I1=255,M1=255,I2=255,M2=255
124199 !MCO:SLP:TNR
124436 TSF:MSG:READ,20-20-255,s=255,c=3,t=7,pt=0,l=0,sg=0:
124441 TSF:MSG:BC
124585 TSF:MSG:READ,0-0-22,s=255,c=3,t=8,pt=1,l=1,sg=0:0
124591 TSF:MSG:FPAR OK,ID=0,D=1
126053 TSM:FPAR:OK
126054 TSM:ID
126056 TSM:ID:OK
126057 TSM:UPL
126095 !TSF:MSG:SEND,22-22-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=NACK:1
126220 TSF:MSG:READ,0-0-255,s=255,c=3,t=20,pt=0,l=0,sg=0:
126225 TSF:MSG:BC
126537 !TSF:MSG:SEND,22-22-0-0,s=255,c=3,t=21,pt=1,l=1,sg=0,ft=1,st=NACK:0
126647 TSF:MSG:READ,0-0-255,s=255,c=3,t=20,pt=0,l=0,sg=0:
126652 TSF:MSG:BC
127391 !TSF:MSG:SEND,22-22-0-0,s=255,c=3,t=21,pt=1,l=1,sg=0,ft=2,st=NACK:0
128102 TSM:UPL
128139 !TSF:MSG:SEND,22-22-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=3,st=NACK:1
128690 TSF:MSG:READ,0-0-255,s=255,c=3,t=20,pt=0,l=0,sg=0:
128695 TSF:MSG:BC
129430 !TSF:MSG:SEND,22-22-0-0,s=255,c=3,t=21,pt=1,l=1,sg=0,ft=4,st=NACK:0
130147 TSM:UPL
130184 !TSF:MSG:SEND,22-22-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=5,st=NACK:1```

Found a new distance sensor HC-SR04P .
De spec shows that the input voltage of this model is 3-5V. So this model can be used with a 3.3V arduino.
https://www.aliexpress.com/snapshot/0.html?spm=a2g0s.9042647.6.2.1AslKf&orderId=89862296499774&productId=32711959780

The mysensors.json is in the same directory as the configuration.yaml.

The first ERROR line in the log above says " unable to setup error log. But in my config directory is also a "home-assistant.log".

Despite the errors in the config check the system seems to works as far as I can see.

HASSIO 0.62.1 on RPI with serial gateway attached
I get "invalid configuration" when running "hassio homeassistant check"

When running configuration validation in the UI I get "valid configuration"

What am I missing?

Error on homeassistant/check: starting version 3.2.4
Testing configuration at /config
2018-02-09 16:40:18 ERROR (MainThread) [homeassistant.bootstrap] Unable to setup error log /config/home-assistant.log (access denied)
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up logger
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up introduction
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up recorder
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up http
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain logger took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain introduction took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain recorder took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain http took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up history
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up system_log
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up websocket_api
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up api
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain history took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain system_log took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain websocket_api took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain api took 0.0 seconds.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up frontend
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setup of domain frontend took 0.0 seconds.
2018-02-09 16:40:19 ERROR (MainThread) [homeassistant.config] Invalid config for [mysensors]: /config directory does not exist or is not writetable for dictionary value @ data['mysensors']['gateways'][0]['persistence_file']. Got 'mysensors.json'
not a valid value for dictionary value @ data['mysensors']['gateways'][0]['device']. Got '/dev/ttyUSB0'. (See /config/configuration.yaml, line 52). Please check the docs at https://home-assistant.io/components/mysensors/
2018-02-09 16:40:19 ERROR (MainThread) [homeassistant.setup] Setup failed for mysensors: Invalid config.
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up sun
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up group
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up map
2018-02-09 16:40:19 INFO (MainThread) [homeassistant.setup] Setting up discovery
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up thethingsnetwork
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up updater
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up sensor
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain sun took 0.3 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain group took 0.3 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain map took 0.3 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain discovery took 0.2 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain thethingsnetwork took 0.2 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain updater took 0.1 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain sensor took 0.1 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up history_graph
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up logbook
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up config
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up cloud
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up conversation
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up automation
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setting up script
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain history_graph took 0.0 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain logbook took 0.0 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain config took 0.0 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain cloud took 0.0 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain conversation took 0.0 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain automation took 0.0 seconds.
2018-02-09 16:40:20 INFO (MainThread) [homeassistant.setup] Setup of domain script took 0.0 seconds.
Failed config
  mysensors:
    gateways: [source /config/configuration.yaml:53]
      - baud_rate: 115200
        device: /dev/ttyUSB0
        persistence_file: mysensors.json
    optimistic: False
    persistence: True
    retain: True
    version: 2.0
  General Errors:
    - Setup failed for mysensors: Invalid config.
Successful config (partial)
  mysensors:
core-ssh:~#